CM Email Blacklist (CMRB) - User Email Blacklist

User Email Blacklist

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You can whitelist and blacklist multiple email addresses at once with the CSV import feature. Check the guide.

Navigate to Admin Panel → CM E-Mail Registration Blacklist.

Click on User Email Blacklist tab.

The blacklist contains a list of all of the emails that will be blocked from registering on your site regardless of their domain status.  Add a new email by typing in the box provided. 

Anyone with an email address matching the address you enter on the blacklist will be unable to register for your site. 

Note on Gmail Domain

Google allows its users to modify the email address by including dots or plus inside the address. This applies to @gmail.com and @googlemail.com accounts.

For example, the owner of johnsmith@gmail.com can use these variations, among others:
  1. john.smith@gmail.com
  2. j.o.h.n.s.m.i.t.h@gmail.com
  3. johnsmith+1@gmail.com
  4. johnsmith+99@gmail.com

Starting from version 1.4.2 of the plugin, you can block all these variants by adding the "clean" version to the blacklist, without including any dot or plus signs. In the example above, that would be johnsmith@gmail.com

More information about the Email Registration Blacklist WordPress  Plugin

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